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AUSCERT External Security Bulletin Redistribution
ESB-2016.0260
Cisco Small Business 500 Series Switches Denial of Service Vulnerability
1 February 2016
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AusCERT Security Bulletin Summary
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Product: Cisco Small Business 500 Series
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-1303
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160128-sbs
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Cisco Security Advisory
Cisco Small Business 500 Series Switches Denial of Service Vulnerability
Medium
Advisory ID: cisco-sa-20160128-sbs
Published: 2016 January 28 21:00 GMT
Version 1.0: Final
CVSS Score:
Base - 5.4
Workarounds:
Yes
Cisco Bug IDs:
CSCul65330
CVE-2016-1303
CWE-20
Summary
A vulnerability in the web-based GUI of the Cisco Small Business 500 Series
Stackable Managed Switches could allow an unauthenticated, remote attacker to
cause a denial of service (DoS) condition on an affected device.
The vulnerability is due to insufficient handling of HTTP requests. An
attacker could exploit this vulnerability by sending a crafted HTTP request to
the affected device.
Cisco has released software updates that address this vulnerability.
Workarounds that mitigate this vulnerability are available.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160128-sbs
Affected Products
Vulnerable Products
Cisco Small Business 500 Series Switches running version 1.2.0.92 are
vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
User must change the default password on the affected device. Alternatively,
the user can upgrade to the first fixed firmware release.
Fixed Software
When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Responses archive at http://www.cisco.com/go/psirt and
review subsequent advisories to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160128-sbs
Revision History
Version Description Section Status Date
1.0 Initial public release Final 2016-January-28
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end
users of Cisco products.
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